1 files changed, 1 insertions, 1 deletions
diff --git a/indra/newview/lltool.h b/indra/newview/lltool.h
index ecc435d844..c5bad9d532 100755
--- a/indra/newview/lltool.h
+++ b/indra/newview/lltool.h
@@ -39,7 +39,7 @@ class LLView;
 class LLPanel;
 
 class LLTool
-:	public LLMouseHandler
+:	public LLMouseHandler, public LLThreadSafeRefCount
 {
 public:
 	LLTool( const std::string& name, LLToolComposite* composite = NULL );